<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body>
<div>
<div>
<div dir="ltr">
<div dir="ltr">Matthew, </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Yes, exactly: PCCOMPOSITR.</div>
</div>
</div>
<div id="ms-outlook-mobile-signature">
<div><br>
</div>
Get <a href="https://aka.ms/o0ukef">Outlook for iOS</a></div>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Matthew Knepley <knepley@gmail.com><br>
<b>Sent:</b> Tuesday, January 31, 2023 6:55:29 AM<br>
<b>To:</b> Adolfo Rodriguez <adantra@gmail.com><br>
<b>Cc:</b> petsc-users <petsc-users@mcs.anl.gov><br>
<b>Subject:</b> Re: [petsc-users] Composite preconditioners in petsc4py</font>
<div> </div>
</div>
<div>
<div dir="ltr">
<div dir="ltr">On Mon, Jan 30, 2023 at 6:56 PM Adolfo Rodriguez <<a href="mailto:adantra@gmail.com">adantra@gmail.com</a>> wrote:<br>
</div>
<div class="x_gmail_quote">
<blockquote class="x_gmail_quote" style="margin:0px 0px 0px 0.8ex; border-left:1px solid rgb(204,204,204); padding-left:1ex">
<div dir="ltr">
<div>Hi,</div>
<div><br>
</div>
<div>how do you use composite preconditioners in petsc4py. I used to have a script that worked but it does not work anymore. Something has changed. Any simple examples?</div>
</div>
</blockquote>
<div><br>
</div>
<div>Do you mean using PCCOMPOSITE?</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="x_gmail_quote" style="margin:0px 0px 0px 0.8ex; border-left:1px solid rgb(204,204,204); padding-left:1ex">
<div dir="ltr">
<div>Regards,</div>
<div><br>
</div>
<div>Adolfo<br>
</div>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="x_gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener</div>
<div><br>
</div>
<div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>